<template>
  <div class="cmt-container">
    <h3>发表评论</h3>
    <hr>
    <textarea
      placeholder="请输入评论的内容(最多吐槽120字)"
      maxlength="120"
      v-model="msg"
    ></textarea>
    <mt-button
      type="primary"
      size="large"
      @click="postComment"
    >发表评论</mt-button>

    <div class="cmt-list">
      <div
        class="cmt-item"
        v-for="(item,i) in commments"
        :key="item.add_time"
      >
        <div class="cmt-title">
          第{{ i + 1}}楼&nbsp;&nbsp;用户:{{item.user_name}}&nbsp;&nbsp;发表时间:
          {{item.add_time | dateFormat}}
        </div>
        <div class="cmt-body">
          {{item.content === 'undefined' ? '此用户很懒，什么都没有说' : item.content}}
        </div>
      </div>
    </div>
    <mt-button
      type="primary"
      size="large"
      plain
      @click="getMore"
    >加载更多</mt-button>
  </div>
</template>


<script>
import { Toast } from "mint-ui";
export default {
  data() {
    return {
      pageIndex: 1,
      commments: [],
      msg: ""
    };
  },
  created() {
    this.getComments();
  },
  methods: {
    getComments() {
      this.$http
        .get("api/getcomments/" + this.id + "?pageindex=" + this.pageIndex)
        .then(result => {
          if (result.body.status === 0) {
            // this.commments = result.body.message;
            this.commments = this.commments.concat(result.body.message);
          } else {
            Toast("失败！！！");
          }
        });
    },
    getMore() {
      this.pageIndex++;
      this.getComments();
    },
    postComment() {
      if (this.msg.trim().length === 0) {
        return Toast("评论不能为空！！！");
      }
      this.$http
        .post("api/postcomment/" + this.$route.params.id, {
          content: this.msg.trim()
        })
        .then(function(result) {
          if (result.body.status === 0) {
            var cmt = {
              user_name: "匿名用户",
              add_time: Date.now(),
              content: this.msg.trim()
            };
            this.commments.unshift(cmt);
            this.msg = "";
          }
        });
    }
  },
  props: ["id"]
};
</script>


<style lang="scss" scoped>
.cmt-container {
  h3 {
    font-size: 18px;
  }
  textarea {
    font-size: 14px;
    height: 85px;
    margin: 0;
  }
  .cmt-list {
    margin: 5px 0;
    .cmt-item {
      font-size: 13px;
    }
    .cmt-title {
      line-height: 30px;
      background-color: #ccc;
    }
    .cmt-body {
      line-height: 35px;
      text-indent: 2em;
    }
  }
}
</style>
